//
//  HMStatusCell.swift
//  CZWeibo31
//
//  Created by apple on 16/8/13.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit
import SnapKit
class HMStatusCell: UITableViewCell {
    // 底部视图的顶部约束
    var bottomViewTopConstraint: Constraint?
    // 定义一个ViewModel 供外界赋值
    var statusViewModel: HMStatusViewModel?{
        didSet{
            
           // print(statusViewModel?.statusModel?.retweeted_status)
            
            // 原创微博
            originalView.statusViewModel = statusViewModel
            // 转发微博
            /*
            - 转发微博逻辑分析
                - 如果retweeted_status == nil  没有转发微博
                    - 底部视图的top == 原创微博的bottom
            
                    - 反之 有转发微博
                        - 赋值
                        - 底部视图的top == 转发微博的bottom
            */
            // 01 卸载约束
            bottomViewTopConstraint?.uninstall()
            // 没有转发微博
            if statusViewModel?.statusModel?.retweeted_status == nil {
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    bottomViewTopConstraint = make.top.equalTo(originalView.snp_bottom).constraint
                })
                // 隐藏转发微博
                retweetView.hidden = true
            }else {
                // 有转发微博
                // 赋值
                retweetView.statusViewModel = statusViewModel
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    bottomViewTopConstraint = make.top.equalTo(retweetView.snp_bottom).constraint
                })
                // 显示转发微博
                retweetView.hidden = false
            }
            // 底部视图赋值
            bottomView.statusViewModel = statusViewModel
        }
    }

   override  init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupUI()
    }

   required init?(coder aDecoder: NSCoder) {
       fatalError("init(coder:) has not been implemented")
   }
    
    // MARK: - 设置视图
    private func setupUI(){
        backgroundColor = RGB(237, green: 237, blue: 237)
        // 添加控件
        contentView.addSubview(originalView)
        contentView.addSubview(retweetView)
        contentView.addSubview(bottomView)
        // 添加约束
        // 01 
        originalView.snp_makeConstraints { (make) -> Void in
            make.leading.trailing.equalTo(contentView)
            make.top.equalTo(8)
            // 该约束已经在自己的类中约束了
            //make.height.equalTo(50)
        }
        // 02
        retweetView.snp_makeConstraints { (make) -> Void in
            make.leading.trailing.equalTo(contentView)
            make.top.equalTo(originalView.snp_bottom)
            // 该约束已经在自己的类中约束了
           // make.height.equalTo(50)
        }
        // 03
        bottomView.snp_makeConstraints { (make) -> Void in
            bottomViewTopConstraint = make.top.equalTo(retweetView.snp_bottom).constraint
            make.leading.trailing.equalTo(contentView)
            make.height.equalTo(35)
        }
        
        contentView.snp_makeConstraints { (make) -> Void in
            make.leading.top.trailing.equalTo(self)
            make.bottom.equalTo(bottomView)
        }
        
    }
    
    // MARK: - 懒加载控件
    // 原创微博
    private lazy var originalView: HMStatusOriginalView = HMStatusOriginalView()
    // 转发微博
    private lazy var retweetView: HMStatusRetweetView = HMStatusRetweetView()
    // 底部视图
    private lazy var bottomView: HMStatusBottomView = HMStatusBottomView()
}
